Electrical Resistivity Tomography (ERT)

3D ERT image of landfill leachate

Electrical Resistivity Tomography (ERT) is proven and robust technology but on-going research has led to new applications and case studies, including:

  • The 3D volumetric imaging of leachate distributions (opaque blue) within the waste mass of commercial landfills. This enables the leachate to be extracted and recirculated to further enhance the production and control of landfill gas, and subsequently the generation of electricity for the national grid.
  • The detection of air-filled tunnels, voids or buried infrastructure in the built environment. Shallow voids will invariably appear as high resistivity features. In this example, three abandoned tunnels (opaque orange volumes) were detected beneath an old meat market in Glasgow. Such structures can pose a significant risk to new developments.
  • The IMAGER project will develop ERT as a geophysical ground imaging tool that can be used for both deposit characterisation and groundwater monitoring.


Contact the Geophysical tomography team